Boiler



(No Model.)

H. H. KELLEY.

BOILER.

No. 527,337. Patented Oct. 9,1894.

UNITED STATES PATENT OFFICE.

HARRY I-I. KELLEY, OF ELYRIA, OHIO.

BOILER.

SPECIFICATION forming part of Letters Patent No. 527,337, dated October 9, 1894.

Application filed June 6, 1894.. Serial No. 513.639. (No model.)

To all whom it may concern:

Be it known that I, HARRY H. KELLEY, o Elyria, in the county of Lorain and State of Ohio, have invented a new and Improved Boiler, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved steam boiler, which is simple and durable in construction, very efiective in operation, and arranged to quickly heat the water to generate steam, at a comparatively small expenditure of fuel.

The invention consists principally of a vertically-disposed shell, and exterior spiral water-circulating pipes having their upper and lower ends entering the interior of the shell.

The invention also consists of certain parts and details, and combinations of the same, as will be hereinafter more fully described and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in allthe views.

Figure 1 is a sectional side elevation of the improvement. Fig. 2 is a sectional plan view of the same, on the line 22 of Fig. 1. Fig. 3 is an enlarged sectional side elevation of the upper end of one of the stay boltsin the top shell head. Fig. 4. is an enlarged sectional side elevation of a joint between adjacent sections of the shell. Fig. 5 is an enlarged side elevation of one of the water circulating pipes as applied, and with the shell in section; and Fig. 6 is a front elevation of the same.

The improved boiler is provided with the usual brick work or setting A, containing the fire box, fuel doors, ash pits, &c.,for burning fuel to heat the water contained in a shell B, disposed Vertically and centrally within the l setting A, the shell being supported at its lower end by water legs 0, preferably made L-shape and supported in the brick work or setting A. The shell B is preferably made in sections B, B B B of which the upper and lowermost sections B and B are provided with the heads B and 13, connected with each other by stay bolts D, passing through the shell B, and preferably somewhat inclined, as indicated in Fig. 1.

The lower ends of the stay bolts D screw in bosses on the top of the boiler head 13, and the upper ends of the said stay bolts form stufiing boxes for insuring a steam tight joint in the head B A For this purpose the head B is formed with recessedbosses B having an inclined bottom, and containing a packing E, see Fig. 3, pressed in place around the upper end of the stay bolt D, by a circular projection or gland D formed on the under side of the nut D screwing on the threaded upper end of the stay bolt. The heads B and B are formed with exterior flanges B which engagethe outer sides of the respective sections B and B to securely hold the said sections in place, and also to form resting places for gaskets forming a steam tight joint between the heads and the ends of the sections.

The several sections are connected with each other by joints, shown in detail in Fig. 4., each joint being provided with a ring F, made T-shape in cross section, to form at its middle portion a seat for metallic gaskets F, on which rest or abut the edges of the adjacent sections, the said edges' also abutting against the flanges formed by the ring F, as

will be readily seen by reference to Fig. 4. The lowermost section B is made tapering so as to fit the upper portions of the water legs 0 at a right angle to the lowermost section, to increase the strength and supporting power of the water legs relative to the shell B.

The shell B is provided with exterior water circulating pipes G, each made in the shape of a spiral, and set in an angular direction, as plainly shown in Fig. 6, the upper and lower ends of each pipe opening into the shell, as indicated in Fig. 5, to cause a slow but perfect circulation of the water through the said circulating pipes, at the same time causing the rising heat to come in contact with all the runs or coils of each pipe, owing to their inclined position as indicated in Fig. (i. By this arrangement the pipes G form resisting or baffling pipes for the rising heat, to insure a complete use of the fuel burned in the furnace and to cause aquick heating of the water and generating of steam. In the bottom of the lowermost head B is arranged a blowoff pipe H, and similar blow-ofi pipes H lead from the lower ends of the. water legs 0.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent 1. 7 An improved boilerrconiprisingthe shell and the spiral water circulating pipes arranged outside of and having their ends connected'with said shell, the axes of the said spirals being arranged at an angle to that of the shell.

2. A vertical boiler having a central sectional column or shell, the water circulating pipes in the form of coils the axes of which are inclined to the direction of length of the shell both ends of said coils entering the same section of the shell in ahorizontal direction,

, per side the bosses provided with threaded sockets, the sections set one upon the other packed joints between such sections the upper head having openings and having surrounding the upper ends thereof recesses, the stay bolts passed through said openings and threaded into the sockets of the lower head; and the nuts threaded on the said bolts above the upper head and having on their under sides portions projecting into the recesses in said upper heads, substantially as and for the purposes set forth. 5. The improved boiler herein described consisting of the boiler formed in cylindrical sections, the lower one of which tapers inwardly toward its lower end, the joint rings fitted between the said sections and having outercylindrical and inner radial plates, the

latter fitting between the ends of the boiler sections, the water legs joining at their upper ends with the tapered sides of the lower sec' tion of the boiler, the boiler heads, the upper one having bolt holes and recesses surrounding the same, the staybolts and the nuts on said bolts and provided on their inner sides with projections entering the recesses in the upper heads, substantially as set forth.

HARRY KELLEY.

Witnesses:

CHARLES W. J OHNSTON, JAMES H. LEONARD. 

